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Weather Forecast Office Quad Cities, IA North Central River Forecast Center

Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Mississippi River at Illinois City Observed crest: 5.29 ft at 12:00pm Nov 20 Observed: 5.93 ft at 4:00pm Nov 13 Observed: 5.93 ft at 6:00pm Nov 13 Observed: 5.92 ft at 8:00pm Nov 13 Observed: 5.89 ft at 10:00pm Nov 13 Observed: 5.84 ft at 12:00am Nov 14 Observed: 5.87 ft at 2:00am Nov 14 Observed: 5.92 ft at 4:00am Nov 14 Observed: 5.83 ft at 6:00am Nov 14 Observed: 5.84 ft at 8:00am Nov 14 Observed: 5.75 ft at 10:00am Nov 14 Observed: 5.77 ft at 12:00pm Nov 14 Observed: 5.78 ft at 2:00pm Nov 14 Observed: 5.72 ft at 4:00pm Nov 14 Observed: 5.73 ft at 6:00pm Nov 14 Observed: 5.74 ft at 8:00pm Nov 14 Observed: 5.72 ft at 10:00pm Nov 14 Observed: 5.74 ft at 12:00am Nov 15 Observed: 5.72 ft at 2:00am Nov 15 Observed: 5.73 ft at 4:00am Nov 15 Observed: 5.76 ft at 6:00am Nov 15 Observed: 5.73 ft at 8:00am Nov 15 Observed: 5.73 ft at 10:00am Nov 15 Observed: 5.74 ft at 12:00pm Nov 15 Observed: 5.73 ft at 2:00pm Nov 15 Observed: 5.74 ft at 4:00pm Nov 15 Observed: 5.75 ft at 6:00pm Nov 15 Observed: 5.76 ft at 8:00pm Nov 15 Observed: 5.8 ft at 10:00pm Nov 15 Observed: 5.75 ft at 12:00am Nov 16 Observed: 5.75 ft at 2:00am Nov 16 Observed: 5.74 ft at 4:00am Nov 16 Observed: 5.74 ft at 6:00am Nov 16 Observed: 5.73 ft at 8:00am Nov 16 Observed: 5.72 ft at 10:00am Nov 16 Observed: 5.72 ft at 12:00pm Nov 16 Observed: 5.71 ft at 2:00pm Nov 16 Observed: 5.73 ft at 4:00pm Nov 16 Observed: 5.73 ft at 6:00pm Nov 16 Observed: 5.73 ft at 8:00pm Nov 16 Observed: 5.72 ft at 10:00pm Nov 16 Observed: 5.71 ft at 12:00am Nov 17 Observed: 5.71 ft at 2:00am Nov 17 Observed: 5.7 ft at 4:00am Nov 17 Observed: 5.7 ft at 6:00am Nov 17 Observed: 5.69 ft at 8:00am Nov 17 Observed: 5.69 ft at 10:00am Nov 17 Observed: 5.7 ft at 12:00pm Nov 17 Observed: 5.69 ft at 2:00pm Nov 17 Observed: 5.69 ft at 4:00pm Nov 17 Observed: 5.7 ft at 6:00pm Nov 17 Observed: 5.69 ft at 8:00pm Nov 17 Observed: 5.67 ft at 10:00pm Nov 17 Observed: 5.68 ft at 12:00am Nov 18 Observed: 5.69 ft at 2:00am Nov 18 Observed: 5.7 ft at 4:00am Nov 18 Observed: 5.71 ft at 6:00am Nov 18 Observed: 5.71 ft at 8:00am Nov 18 Observed: 5.72 ft at 10:00am Nov 18 Observed: 5.73 ft at 12:00pm Nov 18 Observed: 5.73 ft at 2:00pm Nov 18 Observed: 5.76 ft at 4:00pm Nov 18 Observed: 5.74 ft at 6:00pm Nov 18 Observed: 5.74 ft at 8:00pm Nov 18 Observed: 5.74 ft at 10:00pm Nov 18 Observed: 5.74 ft at 12:00am Nov 19 Observed: 5.74 ft at 2:00am Nov 19 Observed: 5.74 ft at 4:00am Nov 19 Observed: 5.71 ft at 6:00am Nov 19 Observed: 5.73 ft at 8:00am Nov 19 Observed: 5.74 ft at 10:00am Nov 19 Observed: 5.74 ft at 12:00pm Nov 19 Observed: 5.73 ft at 2:00pm Nov 19 Observed: 5.73 ft at 4:00pm Nov 19 Observed: 5.73 ft at 6:00pm Nov 19 Observed: 5.72 ft at 8:00pm Nov 19 Observed: 5.71 ft at 10:00pm Nov 19 Observed: 5.71 ft at 12:00am Nov 20 Observed: 5.53 ft at 2:00am Nov 20 Observed: 5.45 ft at 4:00am Nov 20 Observed: 5.4 ft at 6:00am Nov 20 Observed: 5.37 ft at 8:00am Nov 20 Observed: 5.3 ft at 10:00am Nov 20 Observed: 5.29 ft at 12:00pm Nov 20 Observed: 5.28 ft at 2:00pm Nov 20 Observed: 5.28 ft at 4:00pm Nov 20 Observed: 5.27 ft at 6:00pm Nov 20 Observed: 5.26 ft at 8:00pm Nov 20 Observed: 5.26 ft at 10:00pm Nov 20 Observed: 5.25 ft at 12:00am Nov 21 Observed: 5.23 ft at 2:00am Nov 21 Observed: 5.24 ft at 4:00am Nov 21 Observed: 5.23 ft at 6:00am Nov 21 Observed: 5.23 ft at 8:00am Nov 21 Observed: 5.22 ft at 10:00am Nov 21 Observed: 5.22 ft at 12:00pm Nov 21 Observed: 5.22 ft at 2:00pm Nov 21 Observed: 5.23 ft at 4:00pm Nov 21 Observed: 5.13 ft at 6:00pm Nov 21 Observed: 5.1 ft at 8:00pm Nov 21 Observed: 5.08 ft at 10:00pm Nov 21 Observed: 5.1 ft at 12:00am Nov 22 Observed: 5.1 ft at 2:00am Nov 22 Observed: 5.11 ft at 4:00am Nov 22 Observed: 5.12 ft at 6:00am Nov 22 Observed: 5.12 ft at 8:00am Nov 22 Observed: 5.11 ft at 10:00am Nov 22 Observed: 5.14 ft at 12:00pm Nov 22 Observed: 5.12 ft at 2:00pm Nov 22 Observed: 5.14 ft at 4:00pm Nov 22 Observed: 5.13 ft at 6:00pm Nov 22 Observed: 5.13 ft at 8:00pm Nov 22 Observed: 5.14 ft at 10:00pm Nov 22 Observed: 5.15 ft at 12:00am Nov 23 Observed: 5.14 ft at 2:00am Nov 23 Observed: 5.14 ft at 4:00am Nov 23 Observed: 5.12 ft at 6:00am Nov 23 Observed: 5.11 ft at 8:00am Nov 23 Observed: 5.02 ft at 10:00am Nov 23 Observed: 5.03 ft at 12:00pm Nov 23 Observed: 5.08 ft at 2:00pm Nov 23 Forecast: 5.1 ft at 12:00pm Nov 23 Forecast: 5.1 ft at 6:00pm Nov 23 Forecast: 5.1 ft at 12:00am Nov 24 Forecast: 5.1 ft at 6:00am Nov 24 Forecast: 5.1 ft at 12:00pm Nov 24 Forecast: 5.1 ft at 6:00pm Nov 24 Forecast: 5.1 ft at 12:00am Nov 25 Forecast: 5.1 ft at 6:00am Nov 25 Forecast: 5.1 ft at 12:00pm Nov 25 Forecast: 5.1 ft at 6:00pm Nov 25 Forecast: 5.1 ft at 12:00am Nov 26 Forecast: 5.1 ft at 6:00am Nov 26 Forecast: 5.1 ft at 12:00pm Nov 26 Forecast: 5.1 ft at 6:00pm Nov 26 Forecast: 5.1 ft at 12:00am Nov 27 Forecast: 5 ft at 6:00am Nov 27 Forecast: 5 ft at 12:00pm Nov 27 Forecast: 5 ft at 6:00pm Nov 27 Forecast: 5 ft at 12:00am Nov 28 Forecast: 4.9 ft at 6:00am Nov 28 Forecast: 4.9 ft at 12:00pm Nov 28 Forecast: 4.9 ft at 6:00pm Nov 28 Forecast: 4.9 ft at 12:00am Nov 29 Forecast: 4.9 ft at 6:00am Nov 29 Forecast: 4.8 ft at 12:00pm Nov 29 Forecast: 4.8 ft at 6:00pm Nov 29 Forecast: 4.8 ft at 12:00am Nov 30 Forecast: 4.8 ft at 6:00am Nov 30 Graph Created (2:34pm Nov 23, 2009) Observed Forecast (issued 12:10pm Nov 23) U.S. Army Corps of Engineers ILNI2 (plotting HTIRZ) Gage 0 Datum: 533.79 Latest observed value: 5.08 ft at 2:00 PM CST 23-Nov-2009. Flood Stage is 15.0 ft. Forecast data shown here are official public river forecasts. Flow (kcfs)
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NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office.

NOTE: Forecasts for the Mississippi River at Illinois City are issued routinely year-round.

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Upstream Gauge - at Rock Island Upstream Gauge Downstream Gauge Downstream Gauge - at Muscatine

Flood Categories (in feet)
Major Flood Stage:18
Moderate Flood Stage:16
Flood Stage:15
Action Stage:14

Historical Crests
(1) 24.10 ft on 07/09/1993
(2) 23.27 ft on 04/28/1965
(3) 22.96 ft on 06/17/2008
(4) 22.41 ft on 04/25/2001
(5) 20.05 ft on 04/25/1973
(6) 19.94 ft on 05/01/2008
(7) 19.69 ft on 04/26/1969
(8) 19.57 ft on 04/20/1997
(9) 19.50 ft on 04/28/1952
(10) 19.45 ft on 05/09/1975

Low Water Records
(1) -2.3 ft on 12/01/1937
(2) -2.0 ft on 12/07/1936
(3) -1.5 ft on 08/11/1936
(4) -0.8 ft on 09/21/1937
(5) 0.4 ft on 02/09/1959

 Mississippi River at Illinois City location map

Flood Impacts Collapse
29.0 Water reaches the top of the Milan levee.
24.5 Water reaches the top of the Andalusia levee.
22.5 Water affects the entire state park at Fairport and is at the foundations of facilities there.
21.5 Water affects the Post Office and several commercial buildings in Buffalo.
20.5 Water affects Front Street and several homes in Buffalo. Water also affects the fish hatchery at Fairport.
20.0 Water affects Buffalos Front Street at Franklin and on Iowa Highway 22 west of town. Water affects Illinois Highway 92 west of Andalusia.
19.5 Water affects Buffalos Franklin Street and into some yards from seepage. At Buffalo Shores...water is at the foundations of several homes.
19.0 Water affects the Clarks Ferry Recreational Area at Montpelier.
18.5 Water floods Andalusias Second Street in the unprotected area. Water is also at the foundations of several homes in Midway Beach.
18.0 Water affects the state park campground at Fairport.
17.0 Water affects the Buffalo Shores Access Area.
16.0 Water affects the park at Andalusia.
13.0 Water affects residents on Smiths Island.

About This Location Collapse
Latitude: 41.432000° N, Longitude: 91.015000° W, Horizontal Datum: NAD83

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 15 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 N/A N/A Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other 533.79 ft 548.79 ft  

Other Data Sources:
Corps of Engineers (COE) Info for Illinois City

Additional Information Collapse
How low could the river get?

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Hydrologic Resources
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Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information
National Weather Service
Quad Cities Weather Forecast Office
9050 Harrison Street
Davenport, IA 52806-7326
(563) 386-3976
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